these 3 derivations will be built:
  /nix/store/z0z2fcdsr5hfl8x0q84a2w9012djz52y-openfang-0.6.9-vendor.drv
  /nix/store/s8hrq113djw3lrh1xk5wyb61d1jc3xr4-openfang-0.6.9.drv
  /nix/store/hlm0q3ilwg3g2v2igfz3kk82fnf545s8-check-openfang.drv